I think they usually give free 2-day...I got "VIP" with my first order since I had to call them about something. The guy just "upgraded" me. So, I would just call them and ask! Frankly, when you are unsure about shoes and whether they work and need to make a decision, having free overnight is fantastic, as well as free quick returns so you can get your money back sooner.
Maya, do they have a price guarantee? Have you had problems with it?